PreSense: interaction techniques for finger sensing input devices
Proceedings of the 16th annual ACM symposium on User interface software and technology
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Making an impression: force-controlled pen input for handheld devices
CHI '05 Extended Abstracts on Human Factors in Computing Systems
PreSenseII: bi-directional touch and pressure sensing interactions with tactile feedback
CHI '06 Extended Abstracts on Human Factors in Computing Systems
Expressive typing: a new way to sense typing pressure and its applications
CHI '09 Extended Abstracts on Human Factors in Computing Systems
Pressure-based text entry for mobile devices
Proceedings of the 11th International Conference on Human-Computer Interaction with Mobile Devices and Services
A practical pressure sensitive computer keyboard
Proceedings of the 22nd annual ACM symposium on User interface software and technology
Pseudo-pressure detection and its use in predictive text entry on touchscreens
Proceedings of the 25th Australian Computer-Human Interaction Conference: Augmentation, Application, Innovation, Collaboration
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This work presents One-press control, a tactile input method for pressure-sensitive keyboards based on the detection and classification of pressing movements on the already held-down key. To seamlessly integrate the added control input with existing practices for ordinary computer keyboards, the redefined notion of virtual modifier keys is introduced. A number of application examples are given, especially to point out a potential for simplifying existing interactions by replacing modifier key combinations with single key presses. Also, a new class of interaction scenarios employing the technique is proposed, based on an interaction model named "What You Touch Is What You Get (WYTIWYG)". Here, the proposed tactile input method is used to navigate interaction options, get full previews of potential outcomes, and then either commit to one or abort altogether -- all in the space of one key depress / release cycle. The results of user testing indicate some remaining implementation issues, as well as that the technique can be learned within about a quarter of an hour of hands-on operating practice time.